Connecting-rod.



J. MILLS.

CONNECTING ROD.

APPLICATION FILED NOV. 29, 1912.

Patented July 7, 191 4.

James M/b Inventor Attorney icense.

. UNITED STATES PATENT o FIoE.

lrAMEs MILLS, or cINcI-NNA'rI,

OHIO, ASSIGNOR TO THE SMITH 8t MILLS COMPANY, OF. CINCINNATI, OHIO.

CONNECTING-ROD.

Specification of Letters Patent. I fl ipl ieation filed November 29, 1912. Serial No. 734,013.-

Patented July 7, 1914.

tent to that of the first end or less in extent, to any desireddegree, than that of the first end. For instance, in pawl and ratchet motions it is very dommon in machinery to transmit motion to a vibrating pawl-carrying arm through the medium of a connecting-rod actuated by a crank, each excurslon of the arm causing the ratchet to be advanced a certain number of teeth, dependent upon the throw of the crank. 'To increase or decrease the degree of advance at each excursion, the crank would be adjusted to increase or decrease its stroke. Such adjustment of the crank is not convenient, especially when the machine is in motion. My improved connecting-rod is adapted to such a situation as has been just'referred to but no adjustable crank will be needed and the adjustment to vary the extent of the excursions of the pawl-carrying arm may be conveniently made while the machine is in motion.

My invention will be readily understood from the following description taken in connection with the accompanying drawing in which Figure 1 is a side elevation of my improved connecting-rod*illustrated as connecting a crank and a vibrating arm, the

turnbuckle of the rod appearing in diametrical section; and Fig. 2 a plan of the turnbuckle features of the device.

v In the drawing :1, indicates a crank of constant stroke: 2, the crank-pin: 3,'a vibrating arm, which may be assumed as a pawl-carrying arm to be vibrated through arcs ofv selective extent: 4, the wrist of the arm: 5, a, rod having an eye engaging the crank-pin: 6, a thread-upon this rod: 7 a

' rod having an eye engaging the wrist of the vibrating-arm: 8, a collar firmly secured to the end. of rod 7, the illustration showing the collar. as being screwed upon the rod, the collar-having a diametergreater than that of the rod: 9, a hollow turnbuckle having one end threaded" upon screw 6: 10, the longitudinal cavity of the turnbuckle, the end of rod 5 projecting into this cavity an adjusted distance, and collar 8 reciprocating endwise in the cavity, if permitted to do so: 11, a plug surrounding rod 7 and screwed firmly into the turnbuckle and closing the otherwise open'end of the turnbuckle, the inner face of this plug being adapted to be engaged by the shoulder formed on rod 7 by collar 8: and 12, a pin crossing the inner end of rod 5 and serving to prevent the turnbuckle from being unscrewed too far outwardly on rod 5.

The turnbuckle may, if desired, be knurled to facilitate its being'turned by a grasping hand. Radial holes are shown as being pro- 'vided through the turnbuckle to permit thelnsertion and removal of pin 12.. Assume as possible upon rod 5 the collar would be I at liberty to reciprocate within the turn; buckle. The movement of 'rod 5 to theright ,would cause the turnbuckle to drag rod 7- tq the right, but when rod 5 and the turnbuckle move to the left, rod 7 instead of being pushed to the left, would remain stationary until the end of rod 5 came in contact with the collar whereupon rod 7 would.

move to the left with the turnbuckle. The extent .of this lost motion during which rod 7 does not'partake of the motion of rod 5 may be adjusted at will by simply screwing the turnbuckle farther onto or off of rod 5. If the cavity in the turnbuckle were long enough, as might be desirable in some cases, the collar might be able to play in the cavity for a distance equal to the full stroke of-the crank in which case rod 5 would impart no motion whatever to rod 7, under-which conditions the degree of reciprocation for rod 7 might be adjusted from zero to the maximum represented by the stroke of the crank.

i It will be obviousthat the device, even when employed with a crank and a vibrating coming lncontact with collar 8 the contact is, in efiect, With the end of rod 7, the collar being the expedient by means of which the turnbuckle is caused to drag upon rod 7 or, in case the driving power be applied to rod 7, the rod is caused to drag upon the turnbuckle.

I claim A connecting-rod comprising, a sleeve, a rod screwedinto one end of the. sleeve and adapted to be adjusted for a greateror less projection into the sleeve, a hollow plug screwed into the opposite end of the sleeve and having a bore less in diameter than the tioned rod as one of the rods is reciprocated,

whereby the relative degree of reciprocating motion of the two rods may be adjusted. combined substantially as set forth.-

, JAMES MILLs. Witnesses: I

VERNA OHAMPNEY, MAX Mosmm. 

